Bogen C 35 C 60 C 100 Operating Manual

Page 1

m

SOLID STATE PUBLIC
ADDRESS AMPLIFIERS

BCDCEERI®

A DIVISION OF LEAR SIEGLER, INC.

Models C35, C60, & C100

DESCRIPTION

The Bogcn Challenger C series public address amplifiers are
ItIllv transistorized rated at 35 watts in Model C35. 60 watts in
Model C60. and 100 watts in Model C100. All units will
accommodate two high-impedance microphones which may be
connected simultaneously with individual volume controls
provided for each microphone input. Two atIXIliary Inputs are
provided for a tuner. tape recorder. or phonograph with a
ceramic or crystal cartridge, A fader \ oltIme control selects and
adjusts the level of the desired auxihary inpttt and permits a
gradual changeover from one inpttt to the other, A master
tolume control sets the overall level of the mixed inpttts.
Separate bass and treble controls permit adjustments for tonal
balance.

Balanced or singleended outputs are provided for standard
speaker Impedances and 25~\olt center tapped and 70-\ttlt
constant \oltage systems. Two quick-disconnect plugs proude
rapid and convenient connections to speakers. Otttputjacks are
pronded lor feeding a tape recorder or additional booster
amplifier. and for connecting a WMT-l accessory to match the
output to a 500 600-ohm telephone line.

The amplifiers operate from a 120V. 60Hz source. Model C35
has a .93 ampere ctrcuit breaker. C603 |.65 ampere, and CIUI)a
2.5 ampere circuit breakerl Power requirements for the
individual models are shown in the Technical Specificattons.

INSTALLATION

l'NPACKIN

Your amplifier was carefully checked betore lea\ing the
factor\. Inspect the shipping container and unit carelullt for
Indication of Improper handling. II the ttnit has been damaged
make an immediate claim to the distributor from whom It was
purchased. II the amplifier was shipped to you. notify the
transportation company withottt dela\ and place \our claim

POWER AND GROI'NDING

The ac line cord has a three-prong plug whtch should be
plugged into a three-wire grounded. IIO wk, 60 HI outlet. Since it
is important to ground the amplifier. where a three~wire outlet
is not available use an adapter (e.g.. letiton No, 5()|7) and
connect the grounding pigtail to the screw securing the wall
plate. If the wall plate screw Is not grounded. connect a wire
from the OMB termInal ol the amplifier to a water or steam
pIpe.

AUXILIARY POWER

The auxiliary power receptacle on the rear chassis is a three-
w1re grounded outlet which can supply power to accessory
equipment in the sound system. Be stIrc that the accessory
component does not require more than ISO watts on the C35
and C60. and 300 watts on the C100. The power switch controls
this receptacle and can be used to turn the auxiliary unit on and
off. '

Associated equipment connected to the auxiliary receptacle
with a three-prong line cord will be grounded. providing the
amplifier line cord has been properly grounded.

Caution
Lite Ihc urI-Igff \wilt'h (III the phonograph for
turning uffa II'Iurt/ [tllllé'l mnlmletl IU the
uu.\'ilIm'r I'Pt eplacle. Du no! we the amp/flier
pan or .\|\ [Itll Io \Iop (he I'ltUl'tI player at I/zi.\
may cause firm [(1 develop on the idler w heel of
[he phonograph.

INPUT CONNECTIONS

MICROPHONE: Two microphones may be connected to the
amplifier simultaneously. Connect one to the MIC l receptacle
and the second to the MIC 2 receptacle on the rear panel.

The microphones should be of the high-impedance ceramic.
crystal. or dynamic type. Connect each microphone as shown in
figure I. The length of the interconnecting cable should be
under 35 feet. For longer lines a suitable in~|ine transformer
may he used with low impedance microphones.

MICROPHONE PRECEDENCE: Microphone precedence
maybe accomplished by connecting the circuit shown in figure
2. The equipment consists of a microphone. a Y-adapter
(Switchcratt Part No. 33oF I t. a smgle-conductorshIeIded cable
(20 feet maximum length) and a SPDI switch. If the
microphone switch has an extra set of contacts for controlling
an external circuit. such as on the Shttre Model 450. the SIDT
switch is not required.

Plug the Y»adapter into the AUX l or AUX 2 inputjack on
the rear 01 the amplifier. Connect the program source and
precedence switch to the Y-adapter. as shown in the figure
Connect the microphone input to the MIC l or MIC 2 input
jack,

PRINTED IN U.S.A.

u,uflfl,1n

Page 2

TECHNICAL SPECIFICATIONS

POWER OUTPUT:

C35 C60 C100

35 watts 60 watts I00 watts

FREQUENCY RESPONSE:

100 to l0.000 Hz ildB 80 to l0.000 Hz :2 dB

HlTM AND NOISE:

MIC Input 60 dB below rated output
AUX Input 70 dB below rated outpttt

MIC lnpttt 3 mV

SENSITIVITY: AL'X lnrtut 150 mV
8. l6 ohms 8. 16 ohms 4. [6 ohms
OUTPUTS: 25 V CT. (IS ohmsl 25 V CT. (10.4 ohms) 25 V C.T. (6.25 ohms)

70 V (I43 ohmst 70 V (83 ohms) 70 V150 ohms)

OI'TPITT CONNECTIONS:

2 qUtck-disconnect type sockets with plugs provided. in addition to screw-type terminals.
tape booster jack. and provisions for WMT»l

INPl'TS:

2 microphone (high impedance). 2 auxiliary (high-impedance, high level) 500 600 ohm
line with WMT-l accessory

TONE CONTROL ACTION:

2-Microphone Volume. | AUX l-Z Volume (Fader). Master Volume. Bass. and Treble

Treble @ IO kHz: ll dB

CONTROLS Bass @ 100 Hz : || dB
I20 VAC 60 HZ
POWER REQUIREMENTS:
96W I7OW 250W
All Silicon
SEMICONDITTORS: || Transistors l3 Transistors
5 Diodes 5 Diodes
DIMENSIONS: I4-5 X" W X 3~3 4" H x I34 4" D (37.I x 9.5 X 34.9 cm)
WEIGHT: I4 lbs. (6.3 kg) I6 lbs. (7.2 kg) I8 lbs. (KI kg)

PHONO: Connect a phonograph (with ceramic or crystal
cartridge) to either the AUX l or AUX 2 jack. using a single-
conductor shielded cable terminated in a standard RCA phono
plug. It is recommended that a separate ground wire be
connected between the phono player base and the amplifier
GND terminal to minimile httm pick-up. This grottnd wire is
not required when using the Bogen Model LPC-4A phono
player top.

AlXILIARY: The AUX inputs may he used for sources other
than a phonograph. Any signal sottrce ha\ ing a high-letel
(.I5-3V) output may be connected tothese inputs. This includes
such Bogen equipment asthe Model LPC-4A phono play ertop.
and Model TPIbOB AM FM tuner.

_ AMPH.
m ! 75-MCIF

A74-ITOI-OI

Figure l - Connecting Hi-Z Mic

OUTPUT CONNECTIONS

SPEAKERS: The amplifier may be used with most con-
ventional speaker systems. For detailed information on the
installation of multiple speaker systems. refer to the Speaker
Installation Bulletin (No. 54-500I) included with this unit.

In permanent installations. where speakers will remain
connected to the amplifier. connect the speaker system directly
to the Speaker Output terminals on the rear of the amplifier.
Connect one speaker lead tothc COM terminal and the otherto
the terminal corresponding to the impedance of the speaker
system. For balanced output lines. remme the link between
COM and (1ND output terminals. It the line is shielded.
connect the shield to GND. The 70V output is available only
through the 3»pin connectors.

Caution
To minimize shot-k ha:arrl, Class I wiring as
defined in local huiltling tot/vs should Iw UM",
for 7U-l'tI/l out/mix. All other uutpun may use
Claw 2 wiring.

For frequently moved installations. connect the speaker to
the speaker sockets on the rear panel. Two quick-disconnect
plugs (Bogen Part No. 85-0l47r0l) are furnished with the
amplifier to make connections to these sockets. Wiring ot'the
speaker output plug is shown in figure 3.

When the speaker socket is used. connect the wired plug to
either socket. Attach the impedance selector lead to the output
terminal which corresponds to the speaker system impedance.